{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:6N36PGRTVYNKWZIEOFHDVGXBZS","short_pith_number":"pith:6N36PGRT","canonical_record":{"source":{"id":"1701.04193","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2017-01-16T07:02:49Z","cross_cats_sorted":[],"title_canon_sha256":"b1fc0c957fc23ce4e8b32f471b9fb00b64a1657759363f47a0a179471b74a7f9","abstract_canon_sha256":"0dbf64e81ca35e6139a4dd1b833e20da8e3853222e8bc6deff48f89fe00a1780"},"schema_version":"1.0"},"canonical_sha256":"f377e79a33ae1aab6504714e3a9ae1cca5d1c7f14bb5cf7db36d1f7c070216d0","source":{"kind":"arxiv","id":"1701.04193","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.04193","created_at":"2026-05-18T00:41:37Z"},{"alias_kind":"arxiv_version","alias_value":"1701.04193v1","created_at":"2026-05-18T00:41:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.04193","created_at":"2026-05-18T00:41:37Z"},{"alias_kind":"pith_short_12","alias_value":"6N36PGRTVYNK","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"6N36PGRTVYNKWZIE","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"6N36PGRT","created_at":"2026-05-18T12:31:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:6N36PGRTVYNKWZIEOFHDVGXBZS","target":"record","payload":{"canonical_record":{"source":{"id":"1701.04193","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2017-01-16T07:02:49Z","cross_cats_sorted":[],"title_canon_sha256":"b1fc0c957fc23ce4e8b32f471b9fb00b64a1657759363f47a0a179471b74a7f9","abstract_canon_sha256":"0dbf64e81ca35e6139a4dd1b833e20da8e3853222e8bc6deff48f89fe00a1780"},"schema_version":"1.0"},"canonical_sha256":"f377e79a33ae1aab6504714e3a9ae1cca5d1c7f14bb5cf7db36d1f7c070216d0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:41:37.513227Z","signature_b64":"MhKxhkzGv75baf0VF3Z4hlkkj68nvmSAJy7GL7jfgxutlCDa6ruQtiX8BxOlKPUwBvZEF2HsZuvbpRZlwGhqDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f377e79a33ae1aab6504714e3a9ae1cca5d1c7f14bb5cf7db36d1f7c070216d0","last_reissued_at":"2026-05-18T00:41:37.512476Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:41:37.512476Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1701.04193","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:41:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C8zNemSLKLCEBL69OzRA2to8OcfmttbqSzw9nG+XZkq+EwdkwGeZzV+uAG6dbxE/14Qh6fffVxNtR5OdPwZSBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T19:21:33.132406Z"},"content_sha256":"2192cae610c02431cc5137aa60317ab579a2212085d64b2e47cb3c26637d9167","schema_version":"1.0","event_id":"sha256:2192cae610c02431cc5137aa60317ab579a2212085d64b2e47cb3c26637d9167"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:6N36PGRTVYNKWZIEOFHDVGXBZS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Measurement of mass by optical forced oscillation of absorbing particles trapped in air","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Jianliao Deng, Jinda Lin, Rong Wei, Yong-Qing Li, Yuzhu Wang","submitted_at":"2017-01-16T07:02:49Z","abstract_excerpt":"We demonstrate the measurement of mass of the absorbing micro-particle trapped in air by optical forced oscillation. When the trapping light intensity is modulated sinusoidally, the particle in the trap undergoes forced oscillation and the amplitude of the oscillation depends directly on the modulated frequency. Based on a simple spring model, we fit the amplitudes versus the modulated frequencies and obtain the stiffness of the optical trap and the mass of the trapped particle. The fitting results show that, for a certain particle, the stiffness varies linearly with the trapping light intensi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.04193","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:41:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tMWBC+8EgFpLY8QzffQGxdF+8BaZOnt0rBsWbNaxoNh3YIls5yD7/vhHpJOvmcUvjrSxxF8lE2jNZsqz5LZ5Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T19:21:33.132768Z"},"content_sha256":"238bee20c9442b6c6a93f9cd5b749a3e11fd534c831b11765b18cb6ad5a5acca","schema_version":"1.0","event_id":"sha256:238bee20c9442b6c6a93f9cd5b749a3e11fd534c831b11765b18cb6ad5a5acca"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6N36PGRTVYNKWZIEOFHDVGXBZS/bundle.json","state_url":"https://pith.science/pith/6N36PGRTVYNKWZIEOFHDVGXBZS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6N36PGRTVYNKWZIEOFHDVGXBZS/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-27T19:21:33Z","links":{"resolver":"https://pith.science/pith/6N36PGRTVYNKWZIEOFHDVGXBZS","bundle":"https://pith.science/pith/6N36PGRTVYNKWZIEOFHDVGXBZS/bundle.json","state":"https://pith.science/pith/6N36PGRTVYNKWZIEOFHDVGXBZS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6N36PGRTVYNKWZIEOFHDVGXBZS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:6N36PGRTVYNKWZIEOFHDVGXBZS","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"0dbf64e81ca35e6139a4dd1b833e20da8e3853222e8bc6deff48f89fe00a1780","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2017-01-16T07:02:49Z","title_canon_sha256":"b1fc0c957fc23ce4e8b32f471b9fb00b64a1657759363f47a0a179471b74a7f9"},"schema_version":"1.0","source":{"id":"1701.04193","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.04193","created_at":"2026-05-18T00:41:37Z"},{"alias_kind":"arxiv_version","alias_value":"1701.04193v1","created_at":"2026-05-18T00:41:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.04193","created_at":"2026-05-18T00:41:37Z"},{"alias_kind":"pith_short_12","alias_value":"6N36PGRTVYNK","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"6N36PGRTVYNKWZIE","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"6N36PGRT","created_at":"2026-05-18T12:31:03Z"}],"graph_snapshots":[{"event_id":"sha256:238bee20c9442b6c6a93f9cd5b749a3e11fd534c831b11765b18cb6ad5a5acca","target":"graph","created_at":"2026-05-18T00:41:37Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We demonstrate the measurement of mass of the absorbing micro-particle trapped in air by optical forced oscillation. When the trapping light intensity is modulated sinusoidally, the particle in the trap undergoes forced oscillation and the amplitude of the oscillation depends directly on the modulated frequency. Based on a simple spring model, we fit the amplitudes versus the modulated frequencies and obtain the stiffness of the optical trap and the mass of the trapped particle. The fitting results show that, for a certain particle, the stiffness varies linearly with the trapping light intensi","authors_text":"Jianliao Deng, Jinda Lin, Rong Wei, Yong-Qing Li, Yuzhu Wang","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2017-01-16T07:02:49Z","title":"Measurement of mass by optical forced oscillation of absorbing particles trapped in air"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.04193","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:2192cae610c02431cc5137aa60317ab579a2212085d64b2e47cb3c26637d9167","target":"record","created_at":"2026-05-18T00:41:37Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"0dbf64e81ca35e6139a4dd1b833e20da8e3853222e8bc6deff48f89fe00a1780","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2017-01-16T07:02:49Z","title_canon_sha256":"b1fc0c957fc23ce4e8b32f471b9fb00b64a1657759363f47a0a179471b74a7f9"},"schema_version":"1.0","source":{"id":"1701.04193","kind":"arxiv","version":1}},"canonical_sha256":"f377e79a33ae1aab6504714e3a9ae1cca5d1c7f14bb5cf7db36d1f7c070216d0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f377e79a33ae1aab6504714e3a9ae1cca5d1c7f14bb5cf7db36d1f7c070216d0","first_computed_at":"2026-05-18T00:41:37.512476Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:41:37.512476Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MhKxhkzGv75baf0VF3Z4hlkkj68nvmSAJy7GL7jfgxutlCDa6ruQtiX8BxOlKPUwBvZEF2HsZuvbpRZlwGhqDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:41:37.513227Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.04193","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2192cae610c02431cc5137aa60317ab579a2212085d64b2e47cb3c26637d9167","sha256:238bee20c9442b6c6a93f9cd5b749a3e11fd534c831b11765b18cb6ad5a5acca"],"state_sha256":"2b3c6ab71591046887c007c237e8fe6e864bff98bb0418a17260f3eb4a3848d2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iD57rF0MnnGjKY1hDF1qPEAZECQdvzK8I99GRIpp5D8mmIZ/C9wr1mIBOk63Z1gEcLxuPC8I0EZRZ/dRDzOlDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T19:21:33.136219Z","bundle_sha256":"5f0a0c499d15c895dfa812326b187673c94d533ee71c0a288cfbdd91f20cd58e"}}